@@ -154,3 +154,40 @@ the ``extra.symfony-web-dir`` option in the ``composer.json`` file:
154154
155155 $ php app/console cache:clear --env=prod
156156 $ php app/console assetic:dump --env=prod --no-debug
157+
158+ vendor `` Directory
159+ ---------------------------------
160+
161+ To override the ``vendor `` directory you have to introduce changes in the
162+ following files:
163+
164+ * ``app/autoload.php ``
165+ * ``composer.json ``
166+
167+ The change in the ``composer.json `` takes the form:
168+
169+ ..code-block ::json
170+
171+ {
172+ ...
173+ "config" : {
174+ "bin-dir" :" bin"
175+ "vendor-dir" :" /some/dir/vendor"
176+ },
177+ ...
178+ }
179+
180+ app/autoload.php `` you need to modify the path leading to ``vendor/autoload.php ``
181+ file::
182+
183+ // app/autoload.php
184+ /**
185+ * @var ClassLoader $loader
186+ */
187+ $loader = require '/some/dir/vendor/autoload.php';
188+
189+ ..tip ::
190+
191+ This modification can be of interest if you work using virtual environment
192+ and cannot use NFS. For example, when running Symfony app using Vagrant/VirtualBox
193+ guest operating system.